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Nature Live

4 Posts tagged with the palaeontology tag
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Hopping Mad

Posted by Charlotte Mar 13, 2011

It's been a busy weekend of events....first Tadpoles on Saturday and then Dwarf Elephants on Sunday.  A curious combination of topics, but each equally fascinating!

 

Our Tadpole event was timed to tie-in with the first frog spawn starting to appear in our ponds.....which apparently it is, although warmer weather should help more appear.  Apparently (according to our amphibian curator Barry Clarke) frogs have been known to produce spawn as early as December some years, but hard frosts kill the eggs and it's not until the weather becomes milder that the tadpoles are able to start developing.  In fact, the warmer the weather, the quicker they devlop from tadpoles to adults.

 

Barry was a complete star as always and brought along lots of specimens from our zoology collections.

 

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Note the specimen in the centre of the bottom row.....this is a Midwife Toad.  They show great parental care (unlike our common frogs which lay their eggs and then leave them!)  The female Midwife Toad lays her eggs and the male then wraps them around his back legs.  He then carries them around with him (swimming and moving about seemingly unhindered) until the tadpoles are ready to emerge and swim off.  Because of this parental care, the eggs are far safer and have a greater chance of survival than if they were left unprotected.

 

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However, for the ultimate in parental care, go onto the BBC website and use their 'wildlife finder' to watch some incredible footage of Darwin's frog.  You won't believe your eyes    http://www.bbc.co.uk/nature/life/Darwin%27s_Frog#p004j5y9

 

As for the Dwarf Elephants today, well, they were certainly small!  Tori Herridge (a researcher in our Palaeontology Department) brought along some fossils from our collections....including lots of teeth.  The photo below shows the tooth of an extinct Straight-Tusked Elephant at the bottom and an extinct Dwarf Elephant tooth at the top of the photo.  Quite a difference in size!  The Straight-Tusked Elephant was one of the largest elephants ever to live, and could grow to as much as 4 metres tall.  In comparison, Dwarf Elephants were sometimes only 1 metre tall as adults!

 

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We'll be repeating Tori's Nature Live event later this month, at 2.30pm on Wednesday 30th March in the Attenborough Studio.  As always, the event is free and lasts for 30 minutes.  So come and join us if you can and discover more about these mysterious Dwarf Elephants.....

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The Best of British Dinosaurs!

Posted by Charlotte Sep 12, 2010
Who doesn't love a good dinosaur event?!  Triceratops, T-Rex, Diplodocus, Stegosaurus....the list goes on.  But have you ever heard of Scelidosaurus, the topic of our event last Sunday??

 

I certainly hadn't until I met Palaeontology Curator Tim Ewin.  Scelidosaurus was the first whole dinosaur ever to be discovered (before that, only parts of dinosaurs had been found, and no-one had discovered any skulls)....and what's more, it was found right here in England, along the coast at Lyme Regis.

 

 

Scelidosaurus wasn't a massive dinosaur, diplodocus and the like were all ALOT bigger, but it had some fantastic armour plating which may have helped protect it from predators but also may have acted as a form of display, to deter opponents or attract a mate.

 

 

But what's so special about the Scelidosaur remains in Lyme Regis (which are continually being discovered as the cliffs slowly erode) is their quality.  The fossils have been brilliantly preserved and scientists are able to study the bodies of these animals in great detail, including their skin which remarkably has also been fossilised.  

 

 

So next time you're talking about your favourite dinosaur, spare a thought for the often (and wrongly) forgotten Scelidosaurus.  The first whole dinosaur ever to be discovered, found right here on our fair isle and with fossilised skin too - you don't get much better than that!

 

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Scelidosaurus is the dinosaur at the bottom of the picture.  Megalosaurus is at the top.

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Terrific Pterosaurs

Posted by Charlotte Jul 27, 2010
Today's Nature Live event was a real crowd pleaser.  Almost as popular as a dinosaur event (!), we caught up with the curator of our Pterosaur collection, Lorna Steel. 

 

Lorna did a great job of enthusing about the myriad of Pterosaur species that once filled the skies.  With an incredible variety of shapes and sizes, these creatures were around during the time of the dinosaurs and were very successful until the mysterious extinction that caused their demise as well as that of the dinosaurs.

 

Pterosaurs were flying reptiles and ranged in size - some were as small as the your average garden bird, others had a 10 - 12 metre wingspan!

 

There are a range of images on the Museum website, showing what these impressive animals may have looked like.  My favourite is the Tapejara

 

 

Lorna's off to a conference on Pterosaurs in China soon, so hopefully she'll find out the very latest on Pterosaur research and be able to fill us in at her next event.  She's already on a mission to count how many bones are in an average Pterosaur skeleton and how fast they flew....

 

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Picture:  Pteranodon was a giant flying reptile - a pterosaur - a close relation of the dinosaur. They lived during the Cretaceous period aroun 85 to 75 million years ago. Illustration by Neave Parker.

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How much oil is left?

Posted by Charlotte Dec 15, 2009

As part of our Future for Nature season (which has been running on Tuesdays and Thursdays for the past few months) last Thursday I hosted an event about how much oil is left.  Needless to say, it was very thought-provoking.  Andy Fleet, from the mineralogy department, used to work in the petroloeum industry.  He explained how oil is formed over millions of years and how it is found and extracted.  For further information, he suggested visitors have a look at the website of The Association for the Study of Peak Oil and Gas (ASPO) http://www.peakoil.net/  Here you'll discover the debate and discussion surrounding how much oil is left and whether we have reached a peak in oil production....or not.  To give you an idea of the varying estimates, have a look at the graph below.  This shows various predictions for when we will reach peak oil production, the majority of which suggest we have already reached the peak or will do so in the next ten years.  There are a few estimates that suggest a continuing increase in oil production, but whatever the conclusion, one thing is for sure.....at some point, whether today or tomorrow, oil production will decline and we need to be ready with an alternative. 

 

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Graph sourced from The Oil Drum http://www.theoildrum.com/story/2006/11/13/225447/79